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Resilio SyncNextcloud
Free

Free for personal use. Business editions are paid.

 Freemium

The server and clients are free and open source. Nextcloud GmbH sells enterprise support…

Windows, macOS, Linux, Android, iOS Windows, macOS, Linux, Android, iOS, Self-hosted, Web
  • Files sync directly between your devices with no cloud storage involved
  • Fast on a local network and works well with very large libraries
  • Your storage limit is your own disk, and your data never leaves it
  • Desktop client supports virtual files, so a big library costs no local space
  • Closed source, so the protocol and crypto cannot be audited
  • Both devices must be online at the same time to sync
  • You run the server, which means updates, backups and certificates are yours
  • Major version upgrades are known for needing careful reading
Downloadable app Self-hosted, Downloadable app
Closed source Open source
License not stated License: GPL-2.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.